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<FONT color="green">001</FONT>    package net.jmatrix.eproperties.cli;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    /**<a name="line.3"></a>
<FONT color="green">004</FONT>     * Simple class for parsing command line arguments out of an argument <a name="line.4"></a>
<FONT color="green">005</FONT>     * list. &lt;p&gt;<a name="line.5"></a>
<FONT color="green">006</FONT>     *<a name="line.6"></a>
<FONT color="green">007</FONT>     * The arguments can be switches (boolean), or Strings.  For string <a name="line.7"></a>
<FONT color="green">008</FONT>     * arguments, either of the following 2 formats is valid:&lt;br&gt;<a name="line.8"></a>
<FONT color="green">009</FONT>     *<a name="line.9"></a>
<FONT color="green">010</FONT>     * -cargVal or&lt;br&gt;<a name="line.10"></a>
<FONT color="green">011</FONT>     * -c argVal&lt;p&gt;<a name="line.11"></a>
<FONT color="green">012</FONT>     * <a name="line.12"></a>
<FONT color="green">013</FONT>     * For either of these 2 cases, a call go getStringArg("-c") will return <a name="line.13"></a>
<FONT color="green">014</FONT>     * argVal.<a name="line.14"></a>
<FONT color="green">015</FONT>     *<a name="line.15"></a>
<FONT color="green">016</FONT>     * @author Paul Bemowski<a name="line.16"></a>
<FONT color="green">017</FONT>     */<a name="line.17"></a>
<FONT color="green">018</FONT>    public class ArgParser<a name="line.18"></a>
<FONT color="green">019</FONT>    {<a name="line.19"></a>
<FONT color="green">020</FONT>       String args[]=null;<a name="line.20"></a>
<FONT color="green">021</FONT>       <a name="line.21"></a>
<FONT color="green">022</FONT>       /**<a name="line.22"></a>
<FONT color="green">023</FONT>        * The constructor requires the arguements that are passed to the <a name="line.23"></a>
<FONT color="green">024</FONT>        * main method.<a name="line.24"></a>
<FONT color="green">025</FONT>        */<a name="line.25"></a>
<FONT color="green">026</FONT>       public ArgParser(String a[]) {<a name="line.26"></a>
<FONT color="green">027</FONT>          args=a;<a name="line.27"></a>
<FONT color="green">028</FONT>       }<a name="line.28"></a>
<FONT color="green">029</FONT>    <a name="line.29"></a>
<FONT color="green">030</FONT>       public String getStringArg(String key){<a name="line.30"></a>
<FONT color="green">031</FONT>          return getStringArg(key, null);<a name="line.31"></a>
<FONT color="green">032</FONT>       }<a name="line.32"></a>
<FONT color="green">033</FONT>    <a name="line.33"></a>
<FONT color="green">034</FONT>       /**<a name="line.34"></a>
<FONT color="green">035</FONT>        * Returns the string corresponding to the requested key.<a name="line.35"></a>
<FONT color="green">036</FONT>        */<a name="line.36"></a>
<FONT color="green">037</FONT>       public String getStringArg(String key, String def) {<a name="line.37"></a>
<FONT color="green">038</FONT>          for (int i=0; i&lt;args.length; i++) {<a name="line.38"></a>
<FONT color="green">039</FONT>             String arg=args[i];<a name="line.39"></a>
<FONT color="green">040</FONT>             <a name="line.40"></a>
<FONT color="green">041</FONT>             if (arg.equalsIgnoreCase(key) &amp;&amp;<a name="line.41"></a>
<FONT color="green">042</FONT>                 args.length &gt;= i+2)<a name="line.42"></a>
<FONT color="green">043</FONT>                return args[i+1].trim();<a name="line.43"></a>
<FONT color="green">044</FONT>             <a name="line.44"></a>
<FONT color="green">045</FONT>             if (arg.startsWith(key))<a name="line.45"></a>
<FONT color="green">046</FONT>                return arg.substring(key.length()).trim();<a name="line.46"></a>
<FONT color="green">047</FONT>          }<a name="line.47"></a>
<FONT color="green">048</FONT>          return def;<a name="line.48"></a>
<FONT color="green">049</FONT>       }<a name="line.49"></a>
<FONT color="green">050</FONT>    <a name="line.50"></a>
<FONT color="green">051</FONT>       public int size() {return args.length;}<a name="line.51"></a>
<FONT color="green">052</FONT>       public String getLastArg() {return args[args.length-1];}<a name="line.52"></a>
<FONT color="green">053</FONT>    <a name="line.53"></a>
<FONT color="green">054</FONT>       /**<a name="line.54"></a>
<FONT color="green">055</FONT>        *<a name="line.55"></a>
<FONT color="green">056</FONT>        */<a name="line.56"></a>
<FONT color="green">057</FONT>       public Integer getIntegerArg(String key) {<a name="line.57"></a>
<FONT color="green">058</FONT>          String str=getStringArg(key);<a name="line.58"></a>
<FONT color="green">059</FONT>          if (str == null || str.trim().length() &lt;= 0) return null;<a name="line.59"></a>
<FONT color="green">060</FONT>          <a name="line.60"></a>
<FONT color="green">061</FONT>          Integer val=null;<a name="line.61"></a>
<FONT color="green">062</FONT>          try {<a name="line.62"></a>
<FONT color="green">063</FONT>             int i=Integer.parseInt(str.trim());<a name="line.63"></a>
<FONT color="green">064</FONT>             val=new Integer(i);<a name="line.64"></a>
<FONT color="green">065</FONT>          }<a name="line.65"></a>
<FONT color="green">066</FONT>          catch (NumberFormatException ex) {<a name="line.66"></a>
<FONT color="green">067</FONT>             System.out.println ("NumberFormatException reading "+key+" from "+<a name="line.67"></a>
<FONT color="green">068</FONT>                                 "args.");<a name="line.68"></a>
<FONT color="green">069</FONT>          }<a name="line.69"></a>
<FONT color="green">070</FONT>          return val;<a name="line.70"></a>
<FONT color="green">071</FONT>       }<a name="line.71"></a>
<FONT color="green">072</FONT>    <a name="line.72"></a>
<FONT color="green">073</FONT>       /** */<a name="line.73"></a>
<FONT color="green">074</FONT>       public int getIntArg(String key, int def) {<a name="line.74"></a>
<FONT color="green">075</FONT>          Integer i=getIntegerArg(key);<a name="line.75"></a>
<FONT color="green">076</FONT>          if (i == null)<a name="line.76"></a>
<FONT color="green">077</FONT>             return def;<a name="line.77"></a>
<FONT color="green">078</FONT>          else<a name="line.78"></a>
<FONT color="green">079</FONT>             return i.intValue();<a name="line.79"></a>
<FONT color="green">080</FONT>       }<a name="line.80"></a>
<FONT color="green">081</FONT>    <a name="line.81"></a>
<FONT color="green">082</FONT>       /** */<a name="line.82"></a>
<FONT color="green">083</FONT>       public String toString() {<a name="line.83"></a>
<FONT color="green">084</FONT>          StringBuffer sb=new StringBuffer();<a name="line.84"></a>
<FONT color="green">085</FONT>          for (int i=0; i&lt;args.length; i++) {<a name="line.85"></a>
<FONT color="green">086</FONT>             sb.append("  "+i+": '"+args[i]+"'\n");<a name="line.86"></a>
<FONT color="green">087</FONT>          }<a name="line.87"></a>
<FONT color="green">088</FONT>          return sb.toString();<a name="line.88"></a>
<FONT color="green">089</FONT>       }<a name="line.89"></a>
<FONT color="green">090</FONT>    <a name="line.90"></a>
<FONT color="green">091</FONT>       /**<a name="line.91"></a>
<FONT color="green">092</FONT>        * Returns a boolean indicating whether a command like switch was<a name="line.92"></a>
<FONT color="green">093</FONT>        * present.<a name="line.93"></a>
<FONT color="green">094</FONT>        */ <a name="line.94"></a>
<FONT color="green">095</FONT>       public boolean getBooleanArg(String key) {<a name="line.95"></a>
<FONT color="green">096</FONT>          for (int i=0; i&lt;args.length; i++) {<a name="line.96"></a>
<FONT color="green">097</FONT>             String arg=args[i];<a name="line.97"></a>
<FONT color="green">098</FONT>             if (arg.equalsIgnoreCase(key))<a name="line.98"></a>
<FONT color="green">099</FONT>                return true;<a name="line.99"></a>
<FONT color="green">100</FONT>          }<a name="line.100"></a>
<FONT color="green">101</FONT>          return false;<a name="line.101"></a>
<FONT color="green">102</FONT>       }<a name="line.102"></a>
<FONT color="green">103</FONT>    <a name="line.103"></a>
<FONT color="green">104</FONT>       /**<a name="line.104"></a>
<FONT color="green">105</FONT>        * Returns a boolean indicating whether a command like switch was<a name="line.105"></a>
<FONT color="green">106</FONT>        * present.<a name="line.106"></a>
<FONT color="green">107</FONT>        */ <a name="line.107"></a>
<FONT color="green">108</FONT>       public boolean getBooleanArg(String key, boolean def) {<a name="line.108"></a>
<FONT color="green">109</FONT>          for (int i=0; i&lt;args.length; i++) {<a name="line.109"></a>
<FONT color="green">110</FONT>             String arg=args[i];<a name="line.110"></a>
<FONT color="green">111</FONT>             if (arg.equalsIgnoreCase(key))<a name="line.111"></a>
<FONT color="green">112</FONT>                return true;<a name="line.112"></a>
<FONT color="green">113</FONT>          }<a name="line.113"></a>
<FONT color="green">114</FONT>          return def;<a name="line.114"></a>
<FONT color="green">115</FONT>       }<a name="line.115"></a>
<FONT color="green">116</FONT>    }<a name="line.116"></a>




























































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